{"nhtsa_id":618511,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-04-14","date":"2001-02-01","document_id":"05135","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION","mfr_system":null,"summary":"SOME VEHICLES WITHIN VIN RANGE 720001 - 812255 MAY HAVE SPARK PLUGS THAT HAVE BEEN AFFECTED BY CORONA DISCHARGE THAT LEADS TO CORONA STAIN OR WHAT IS OFTEN REFERRED TO AS SPARK PLUG BLOW-BY. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/618511","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"JAGUAR","model":"SEDAN RANGE","year_from":1995,"year_to":1997,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}